code: def test_output_size():
      layer = LogMelFbank(n_fft=4, hop_length=1, n_mels=2, fs="16k")
      print(layer.output_size())
  
file_path: espnet/test/espnet2/tts/feats_extract/test_log_mel_fbank.py
imports: import numpy
  import torch
  from espnet2.tts.feats_extract.log_mel_fbank import LogMelFbank
  from espnet.transform.spectrogram import logmelspectrogram
label_desc: Use image node_id 4 for calling a global function with example usage: test_output_size() without return types